Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Ramasamy, Parthiban | - |
dc.contributor.author | Kim, Miri | - |
dc.contributor.author | Ra, Hyun-Soo | - |
dc.contributor.author | Kim, Jinkwon | - |
dc.contributor.author | Lee, Jong-Soo | - |
dc.date.available | 2017-07-11T04:40:36Z | - |
dc.date.created | 2017-04-10 | - |
dc.date.issued | 2016 | - |
dc.identifier.issn | 2040-3364 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/2570 | - |
dc.description.abstract | Copper based ternary and quaternary semiconductor nanostructures are of great interest for the fabrication of low cost photovoltaics. Although well-developed syntheses are available for zero dimensional (0D) nanoparticles, colloidal synthesis of two dimensional (2D) nanosheets remains a big challenge. Here we report, for the first time, a simple and reproducible cation exchange approach for 2D colloidal Cu2GeSe3, Cu2ZnGeSe4 and their alloyed Cu2GeSxSe3-x, Cu2ZnGeSxSe4-x nanosheets using pre-synthesized Cu2xSe nanosheets as a template. A mechanism for the formation of Cu2-xSe nanosheets has been studied in detail. In situ oxidation of Cu+ ions to form a CuSe secondary phase facilitates the formation of Cu2-xSe NSs. The obtained ternary and quaternary nanosheets have average lateral size in micrometers and thickness less than 5 nm. This method is general and can be extended to produce other important ternary semiconductor nanosheets such as CuIn1-xGaxSe2. The optical band gap of these nanosheets is tuned from 1 to 1.48 eV, depending on their composition. © 2016 The Royal Society of Chemistry. | - |
dc.publisher | Royal Society of Chemistry | - |
dc.title | Bandgap tunable colloidal Cu-based ternary and quaternary chalcogenide nanosheets via partial cation exchange | - |
dc.type | Article | - |
dc.identifier.doi | 10.1039/c5nr08666c | - |
dc.identifier.scopusid | 2-s2.0-84964597664 | - |
dc.identifier.bibliographicCitation | Nanoscale, v.8, no.15, pp.7906 - 7913 | - |
dc.subject.keywordPlus | ABSORPTION | - |
dc.subject.keywordPlus | ATTACHMENT | - |
dc.subject.keywordPlus | Cation Exchanges | - |
dc.subject.keywordPlus | Colloidal Synthesis | - |
dc.subject.keywordPlus | ELECTRICAL-PROPERTIES | - |
dc.subject.keywordPlus | Energy Gap | - |
dc.subject.keywordPlus | In-Situ Oxidation | - |
dc.subject.keywordPlus | Low-Cost Photovoltaics | - |
dc.subject.keywordPlus | NANOMATERIALS | - |
dc.subject.keywordPlus | NANOPLATELETS | - |
dc.subject.keywordPlus | NANOSCALE | - |
dc.subject.keywordPlus | NANOSHEETS | - |
dc.subject.keywordPlus | OPTOELECTRONICS | - |
dc.subject.keywordPlus | Positive Ions | - |
dc.subject.keywordPlus | Quaternary Chalcogenides | - |
dc.subject.keywordPlus | Quaternary Semiconductors | - |
dc.subject.keywordPlus | ROOM-TemPERATURE | - |
dc.subject.keywordPlus | Semiconducting Selenium Compounds | - |
dc.subject.keywordPlus | Synthesis (Chemical) | - |
dc.subject.keywordPlus | Ternary Semiconductors | - |
dc.subject.keywordPlus | THERMOELECTRIC APPLICATIONS | - |
dc.subject.keywordPlus | Thickness Measurement | - |
dc.subject.keywordPlus | Two Dimensional (2 D) | - |
dc.subject.keywordPlus | ZN-S NANOCRYSTALS | - |
dc.citation.endPage | 7913 | - |
dc.citation.number | 15 | - |
dc.citation.startPage | 7906 | - |
dc.citation.title | Nanoscale | - |
dc.citation.volume | 8 | - |
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